Vernier height gauge



Feb. 5, 1946. c, ow I 2,394,137 p VERNIER HEIGHT GAUGE Filed July 8, 1944 2 Sheet-Sheet 1 INVENTOR Feb. 5, 1946.- c. N. BARLOW I 4,

I I VERNIER HEIGHT GAUGE Filed July 8, 1944 2 Sheets-Sheet 2 I g v I zs. 28. 6.16.12 14. 21.22.23. 18.1.9. a7. a

FI E J0 razc 1214. 212a. 1a.

INVENTOR Patented F cl). 5, 1946 UNITED; STATES PATENT OFFICE 2 ,394,137 vnnumnnaromroauonj C N Barlow, Los. Angei' s, Cant; ApplicationJul-y s, 1944 serial no. sis-me (c1; est-.170)

I Claims. This invention relates to; gauges adapted to rovide precision measurement gaugingand de. lineat-ion of linear'dimensions; as distances re- "latedto a planar'suriace supportive of the base of thei-nstrument; I

"An object ofmy invention is to provide a gauge of the character describe-d wherein the coj-active precision finished'surfaces and moving parts are enclosed, in such manner as to, insure protection from damage during handling and use 01, the instrument;

' An er obiect stic pr vide aea e. structu wherein the ctr-active Workingsurfaces'afiordP ing precise functioning and adiustments of they instrument for attaining. maintaining and trans,- ierring precisionahmeasurement accuracy. are obtained by the noveldisposition of unusually substantial'i parts providing suchsurfaces by the use of a' tubular post, and related parts; A further" object is. to provide a gauge of the character described wherein manual contact with the instrument. relative. to. the precision movement adjustment of the horizontal instrument arm takes place at ajnoint, removed therefrom and asv located on; the baseof the instrument, whereby to! insure precisional movement of i the arm unhampered' direct-i or contiguous manipiul'ation contajct. I

A. further object is, to provide an arrangement of Vernier and linear measure scales whereon the indicesof both-scalesface. the. operator for direct visual readings without recourse toturning the instrument around. as in; usual practice, and further. provide a Vernier scale" having a, large number of parts-, for, example the one having fifty as illustrated; whereon thev indices; divisions are spaced twice as; far apart asthose utilized in present practice.

/ with the above and other objects-Yin view the inventionccnsists, in the. novel construction and combination; of. parts-hereinaiter described. illus--. trated in the" accompanying drawings, and set forth in the. claims hereto: appended, it being understood that various: chan es: in f pr portion, size and: minor details or construction within the scope. of the claims may. be resorted to without. departing'from the spirit or sacrificing any'of the advantages or the invention.

Inthe drawings: P Fi'gure l; is a side elevationalview: having portions of the vertical extent thereor omitted for clarity in size or illustration.

Figurez is a vertical sectional view- Figure l as'taken on the -plane-orlined- 201 Figure 3.

- trolled" and manually operated by means dis-posed Figure 3 is a cross sectional view on line 39-3 ofFigure 2;

Figure 4' is a longitudinal sectional view of the slide or sleeve assembly r Figure- 5 i'san elevational' viewof the main unit portion of the slide-or sleevei Figure 6 is an end vievmf Figure 5. Figure- 7 is a "plan"- view of the lockmember 01 the slide: r

Figure 8 is a part sectional elevational view or the instrument arm clamp for securing devices to-the arm.

, Figure 9 is a part-sectional 'piarr" view of the half-nut member or the slide;

Figure 10 is a plan view of thelootrout oi the base par-tially broken away forinterior disclosure. Figure '11 is a fragmentary part sectional-"elevational view of the linear measurement scale showing the linear adjustment relation of the scale to its fixture means.

Figure l2isa fragmentary sectional view ofEa modified form of means providing for manual manipulation and" longitudinal measurement ad'- Justment setting' or the slide as related to the lead screw. I j

Referring to the; drawings in general; the warmer height gauge or my invention collectivel embodies a base-member A providing; a plurality of point contacts supportive of the instrument on a planar surface. A tubular longitudinally slotted post B vertically and rigidly affixed to the base for and as providing anovel dual purpose means of attaining precisional as well as protected-operationof the working parts; The bore or the tubular post provides a surrounding and therebylarge; surface contact for-precision fitting; guidanceand looking or the parts therein in contrad'istinction; to the use oi a solid member post with partsmounted, guided and locked exteriorly thereon, and in addition the tubular post of my invention provides a housing protective oi the working parts against accidental damage.

In llurtheranceof the novelt of design above set forth; the parts, later descrihed and function,- ing andhouseci within the tubul'ar post, are conexteriorl thereof and comprise the knob Cretative for precision movement of the instrument arm or support 13; the latch E for release, rapid traverse movement and 'reengagement or the rider" arm D for operation by the knob C for pre- ,cision adjustments; and the lock means F for insuring the desired fixed" position of the arm.

Referring to the; drawings more specificaliy; the base A consists of a substantiallyrectangular l the V to form the flat surface 39 aligned with correanginarity of the longitudinal axis of the post 3 i to a planar surface supportive of the instrument;

e a plurality of supporting points in the form of hardened and ground steel balls 3 are set in the spherical bottomedbores 4 in the base A in a manner providing a limited projection of the surface of ,theballsebeyond the mainsurface of V the baseqi Ffor'retentionfof the-balls the bores '4 and adjustment of their points of contact for ing with and forming a backstop. forthe ball travel of the respective plugs fiiservet'oi extrude or retract the poin contact of any' or all the balls to form a true plane of support'foithe tmment-; .By t es ame ns he svm e ic l 'rightangularity of the longitudinal @XlS OfnjfihG is rendered precisionally ad'ustable; v. tar The post B, secured't e'A as described, is

p Bite. am ane o gsunpe tior the i st u nt provided {with the longitudinallslot B and t e end closures 9 nd 9; be fo mer ser i gas Map r thetiib la e t-' n de-the J'o rn bear s bore l !;the latter affording the journal bearing 2: esebear ns lserre to-v nt al ze and'm I l spectivezj ournalr-formed ends J3 -and 14 of the lead screw I5 as rotative on the longitudinal r ent rel n x s o he:tub -0 s v lead-screwgfl'a is the geartrain means. G {disposed in B ,e the' ba -,.Th rive e 5 andatb d i e eea iitov e tem l9 ciql na edri n lbor e ed-fe rotaticn b the kno C. To afford accessible manipulation of the knob C ;as properly; spaced from the post 33 he idler gear-.2! is;- di sposedlbetween the gears; Hand I8 andemq nte ,l o r t on; t e Jo al pin 22 afii 9d;,-t9 t ek a e, 2 i r o ed? b w e he respective gears and the surface 24 of the recess 1 5: fret-in a s e lros en a a nta shi e-1gp! he seem h te 2.3 s pr d w th thee-bor s: Z and-2 bres etiv 1men a n "t e i urn lem i f fri ds ew 5l-and het m ;:t e1; ob:C-; .v'lo ar as nstxd mae of an insure dust proof operation of the gears the recess-1fiis closedwby the-removable plate 21 se 7 ure t' t eas asbyzmcans of t e s e 1 V 1A abo e.- se fo hiin, en e m s p vidingffor precisional guidance, setting; a locking andgrapidtraverse movement of the instrument arm p ge housed'within the-tubu1arpost 1B whereas the; means eifecting manual control of hese aforesaid means are disposed exteriorly of the said post.-;-

Precisional guidance of the severalpartswithin the post Bis effected by means of the'sleeve or slide- Z B -the central bore 30111116116011 freely surrounding the lead screwwhereas the outer cylindrical; surface r 3| or; the sleeve 7 is fitted to fixe athe-Jour nd 14 of the ma 'whereby rotational setting andfresultingthra'd a embodies 'the'thread-form portion 43 adapted to engage ,and semicircularlysurround the lead spending flats on the plates to form a seat for mounting the instrument armvD the portion r 4d vof which extends lengthwise of; fitted in and longtiudinally slidable in the slot 8 and is made a part of the sleeve 29' as by ineansof the screw fastenings 4|. It is'apparent that the engagerelated to a cylindricalposty e 7 Manual operation' of the device relative to ionthe purpose above described; I provide thethread:

-g-itudinally positioned setting of the instrument ed plug 6 threaded in a portion of the bore 4 and having the concave spherical surface"l contactfarm D; in the form of rapid traverse movement th'ereof is controlled by manipulation of the latch means Precisionally guided by and slidable in the guidewayn'il the' spring urged half-nut 42 screw-I5." The cut away portion 44 providing for he:- a t h d qrti n .3, f me c nxt rus ual fnanner well known n7 theyart; leaves the the guideway31tan'amount.sufficientto'free the v is affected lexterijorly of the postglbyfthe flatch v lor gitudinally slidewithin-thebore 3 2 of-the post. 1

LIFh ends 0f: the sleeve or slide 2 9, are provided with the transversely positioned slots 33 and 34. Plates35, fitting the bore' of the;post,;are secured to. the ends ofthe sleeve,-.as by-meansofthe screws 36, and: thereby provide closedguideways 31 and 38: whe e n: enc o ed; Pa s aremovable at i t angles to the longitudinal center line axis of the st, an ad c 15 A or of he en cylindrical-surface 3 I ;,o f ;the sleeve 29- aw a;y

prongs 45' which are provided with the {holes 46 adapted to receive the opppsite ends]? of the spring 48. The coils of this spring incircle the pin fixed in the respective end plate [35,;in such position? and manner -as,- to urge and .hold thethread portion 43 ;of the half-nutAZin positive engagement with thethreads of thelead screw ll'n The half-nut 42 is less. in length than the transverse dimension of the bore 32rof the pQSt'B to provide for lateral movement of 'thei half-nut in thread engagem nt of thehalf- -njut from the lead screw l5. misel atellailimbyeniht off-the half-nut meansjE and consists of the pin'5il secured tolthe half nut and sliding in the bore 5 l the head 52 thereof ada tedto.engage thelbifurcated end 53 oflthe laWIiQ Q r-IHh vi p c ivi l id p ree 5 1str ld inst in trument va m D, and e ured her onb u um pin; .Man n lfil iQlllOf the latch lever 54" such as{ to ,jswing it I nwa df s ash s j in ith r der rm; e-

or t iced screw I75. h srl asesn iionit s pp 7 l 'ment arm is freely slidable and'rapidly movable longitudinally of the post and when andlas so manipulated constitutes the means p foviding for rapid travrse rnovem e ntof the arm? This 'movemeet providesfor quiemy abliroximate setting of the arm at any desired"he engwnereupbn; ma

uai renase of the'latchjlever54 prmits {the spring 48 th jimpel'thehalf -nut 42 into frenga giment with thei-i au serew 5 whereby com letion of and precisignal setting of the arm is accornplished by rotational movement of the'lad'scrw many means of the knob C. Ji

out interference with the other: Itjis apparent 7 that movement of the surface 258' of, the boltcinto direct forcedcontact with. the F bore surface 32Lof the post; as by meansvof the thumb.screw'.60,-fric-i V tionally locks the slide 29iand instrumentarmflin fixedpqsi non hepost Desirable formseofi de i stwh as t e an l Ethane semred: ire-the instrument. armunlsby suitclampingtmeans 82 in theaform: df thetirame encircling the. amandedevice; witn; clamping eflort provided by the' thumhscrewfifl: having the .shdezslide 55 engaging the one; surfiace G5 of the rider. By 'this;.means the; ridersnriace 6 1 and scriber point? 68: thereof, Figure; 1,; are: aligned upona ml' held: in fixed; relation: i-n-lthaplane of the suriacefisuas the datum: fpointi of the instrumen arm 19/ relative to: the-above? deseribedi supporting points of the, base; 13 of the instrument for; the allocation; and transference; Qr-delineatiom or adjusted distances therebetween b ILOBiQ h r m Q ride Allo ation Qtmeasur d: distant, s tw enith mints?- of s pport and theda nn PQi ..:-..abo-M de r ed; a d definable; as distances rel ted to; a d s red s aleo e su ement al-u s; are P o ided f by me ns o the: scale m m e fl-andthe ve i r scale H1 aduated t anyd sired caleo readings. These: scales areadisposed in juxtalinear relation for interpolation of thescaleread, ings oi the one as: longitudinally related'td the longitudinally adjustabiy secured .to the. post; B, as by meansof thescrews lit-engaging. the slots" longitudinally disposed. in the, scale: member 10. Such. adjustment as described; provides for longitudinal fixation setting of the first; indexed unit of measurementon the scale member 10 with'relation to the datum point station or surface ofithe instrumentarm D as indicated by the zero index of the vernier scale; as aligned and p-recisionally registering a known number of whole units of measurement as existing between the plane of support of the instrument and the datum point station or surface 69 of the instrument arm.

The vernier scale H having the ears 15, Figures 2 and 3, is secured to the instrument arm D as by means of certain of the screws 4| passing through the ears l5 and instrument arm as connectively secured to the slide 29 and as aligning the zero indicia of the vernier scale with the datum point or surface 69 of the instrument arm D.

In the modified form shown in Figure 12 the knob H is afiixed to the journaled end 13 of the lead screw I5 as projecting through the bore ll of the cap 9 for direct connected rotation of the lead screw l5.

Having thus describedmy invention I claim: 7 Q

1. In a vernier height gauge; a base, an upright round tubular post afiixed to said base, a lead screw longitudinally disposed within and having its ends journaled in end closures of said post, a sleeve longitudinally slidable in the bore of said post, thread means carried by said sleeve adapted to engage said lead screw whereby rotation of said screw moves said sleeve longitudinally of said post, an instrument arm on said sleeveslidable in and projecting from a longitudinal slot in said post, a linear measure scale on said post, a vernier scale on said arm, said scales disposed in juxta-linear relation for interpolation of the scale readings of the one as longitudinally related to the other and as defining distances between the supporting plane of said base and a point on said arm and means for rotating said screw.

2. In a vernier height gauge; a base, anupright tubular post aifixed to said base, a lead screw longitudinally disposed within and having its ends journaled in end closures of said post, a sleeve longitudinally slidable in the bore of said post, thread means carried by said sleeve adapted to engage other. The: scale member 10,, Figures 1 and-3;, is mounted on the flat surface t2 extending longitudinallly of thepoStB. The scale member H1 is moves: said. sleeve longitudinally or said; poets. an instrumentzarm;on-saidzsleeueislidable in, and p205 l'estmg from" a longitudinal-slot in, said a linear; measure scale ion: said. post, r a vernier: scale "on sai h h s id-resales; disposed l,uxta,.-linear relation-ion interpolationsofithetsc l iread nssr o a the oneas longitudinally-related toetheother and as defining distances between the-supportinggplane fiaidhaeeand a p nt onsa. a m and gear t ain means n said base cqn eetd t an rotat fis id screw; and m ns or ota i said s arsan; a, re nierheisht saucer a ba ian upr h tubular postaflixed to Said-b31535, a lead screwlon s t di'nalr .d spcs in m h in s nds mov esisaid. sleeue longitudinally: ofi said; post-,an'

instrumentarm en saidsleeve lidable in andprojecjtingv. from a longitudinal. slot in saidtpost, a linear measure scale; onsaid post. a vernier scale onsaid arm, said scales disposed in junta-linear relation for interpolation of the scale readings of the one as longitudinally related to the, other and 'asldefiningdistancesbetween the supporting plane of said base and apointon said arm, a gear train housed; in said. base, interconnecting the. base en.- closed end oi said screwiand a knob, exterior of said base whereby tomanually rotat the gears of saidtrain andsaidscrew. p

4. In a, vernier height. gauge,;t"a base, a. cyline drical tubular longitudinally; slotted; post afii'xed to; said, base a sleeve andfandnstrument arm thereoflongitudinally slidable in said post, a lead screw freely extending through said sleeve and journaled in end closures of said post, screwthread means on said sleeve adapted to engage and disengage said lead screw, a linear measure scale on said post, a vernier scale on said arm, said scales disposed in juxta-linear relation for interpolation of the scale readings of the one as related to the other as defining distances between the supporting 'plane of said base and a point on said arm and means for rotating said screw whereby to longitudinally move and setsaid arm when said screw-thread means engage said lead screw, and latch means on said arm for disengagingsaid screw-thread means from said lead screw for rapid traverse movement of said arm.

5. In a vernier height gauge; a base, a round tubular longitudinally slotted post affixed to said base, a sleeve and an instrument arm thereof longitudinally slidable in said post, a lead screw freely extending through said sleeve and journaled in end closures of said post, screw-thread means on said sleeve adapted to engage said lead screw whereby to longitudinally move and set said arm upon rotation of said screw, a linear measure scale on said post, a vernier scale on said arm, said scales disposed in juxta-linear relation for interpolation of the scale readings of the one as longitudinally related to the other as defining distances between the supporting plane of said base and a point on'said arm and means for rotating said screw.

6. In a vernier height gauge, a base, a round tubular longitudinally slotted post affixed on said base and housing a lead screw, an instrument arm slide in said post, a half-nut carried by said slide, latch means carried by said arm and operable to engage and disengage said nut relative to said lead screw and means for rotating said screw.

said: lead: screw rotation; or said; screw I rotating said screw;

Inlavernierlheightgauge; a rbase, a'ro'ufid V tubular,longitudinallyislotted postamxedon'said base andhous ingalea'discrew}a rider-arm slide in said Lp'ost,:a halfnut'icarried by said s1i'd'e', a linear measure scaleon saidlpostavernien scale on said slide, levered latch mean's earried-ibyfsaid arm and operable to engage and disengage said 'nut relative to said lead-sorew and means "for 8; ma 'vernier 'heightgauge; a basefa round tubular longitudinally slotted post affixed =r 51 t{ said base and housing siege scr wgge rider-'arin slide ins'aid 'postia half-nut'carried-by said slide, a linear'measure scale lon'gitudinallyfadjustable on said postja Vernier scale on said slide,--levered latch meanscarried by said arn and operableto engage anddisengagejsaid nutrelative'to: said lead screw and means for-rotating saidscrewl; 9. In a Vernier height? gauge a'fbase supported, longitudinally slotted tubular post provided with a linear measure scale, a-sleeve 'slidable in" aid post and havingan instrument arm projected through said slot-'and carrying a vern ier'scalein F longitudinal juxtaposed relation to said? linear measure s'cale, a leadjs'crew journaled-in' s'aid post, a thread'means carriedby said sleeve and movable therein to: in thej pneinstance engage "said screw and move said (sleeve longitudinally in said postby rotatio'nof said screw and in the other instance disengagesaid sleeve from said screw. and means 'for rotating saidfscrew, and other means carried by said sleeve and operable to move saidthread means'in said sleeve.

1 0. In avernier height gauge; a base supported, longitudinally slotted round! tubular post providedrwith .alinear measurescale', a sleeve slidable in said post and having. an instrument arm proejected through said slot and carrying a 'vernier V scale in .longitudinal'juxtapo'sed relation to said linear measure scale, a lead screw journaledin said post, a thread meanscarried'by said sleeve "and movable therein tom the one instance en-- gag'e said screw: and move said :sleeve longitucli n'allyin said post by rotation' of saidscrew and in the other instance disengage said sleevefro'm said screwand means for'rotating said screw;

.:1l. In a Vernier heightgauge; a base, around jtubular'longitudinally slotted post afiixe'd to said base, a lead screw journ'aled in" end closures' of said posta sleeve 'slidable in said posti an -in- 'strurnent arm on said sleeve,"a thread means ca'r ried 'by saidsleeve and movable therein'to in the or elnstance engage'said screw and-movefsaid sleeve longitudinally in said post by "rotation of said screw and in the'other instance disengage said sleeve from said screw and means for rotating-saidscrew. I 7 -"f 12. 'Ina vernier' height gauge; a base, a cylindrical tubular post aflixed to said base, a lead screw journaled in end-closures of said-post; a

V sleeve 'slidable in saidpost, an instrument arm on said sleeve, as'pring urged thread means carried by said sleeve and movable therein to in the one I instance engage said screw and move said sleeve longitudinally in said post by rotatio'nof said screw and in'the other instance disengage said sleeve from said screw and means-for rotating said screw.

' CARL N; ABLQW-W I 

